netdev - Re: [PATCH net-next v2 1/4] net: allow > 0 order atomic page alloc in skb_page_frag

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Message-ID: <1389205563.31367.1.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 08 Jan 2014 10:26:03 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Michael Dalton <mwdalton@...gle.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Eric Dumazet <edumazet@...gle.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jason Wang <jasowang@...hat.com>,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH net-next v2 1/4] net: allow > 0 order atomic page alloc
 in skb_page_frag_refill

On Wed, 2014-01-08 at 20:08 +0200, Michael S. Tsirkin wrote:

> Eric said we also need a patch to add __GFP_NORETRY, right?
> Probably before this one in series.

Nope, this __GFP_NORETRY has nothing to do with this.

I am not yet convinced we want it.

This needs mm guys advice, as its a tradeoff for mm layer more than
networking...


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